单项选择题

He has suffered from this ______ disease for about a couple of years now, no effective medicine for it at the moment.

A．perpetual
B．permanent
C．chronic
D．sustained
<上一题 目录 下一题>
热门 试题

单项选择题
______ sheep was grazing on the hill and an eye dog was watching them from a far.
A．A herd of
B．A school of
C．A pair of
D．A mop of
单项选择题
Years ago, many of the machines were operated ______ but now they are operated by computers.
A．manually
B．artificially
C．automatically
D．synthetically
相关试题